Chapter I. Introduction. Naval Architecture: the science and engineering of designing ships and other kinds of waterborne crafts. Kinds of ships Sub systems.

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Presentation transcript:

Chapter I. Introduction

Naval Architecture: the science and engineering of designing ships and other kinds of waterborne crafts. Kinds of ships Sub systems Fundamental principles of N.A. 1. Statics & Dynamics 2.Resistance 3.Propeller

I. Category of Ocean Vehicles By Support (restoring) Forces - Supported by buoyancy force – Conventional displacement ship - Supported by Hydrodynamic force - Hydrofoil ships and Planning Hull ships, at Full Speed. -Supported by Aerostatic force (pressure) - Air cushion vehicles at full speed -Ground supported- Ocean drilling platform (median and shallow water)

By Missions - Military Purpose: Aircraft carrier, Cruiser, Destroyer, Service vessel, Patrol boat (gun boat), Landing craft. -Non-military Purpose: a. Transportation: Passenger ship, Container ships, Bulk carrier (wheat, coal, ore, mineral), Oil tanker (very large), Specific vessel (LNG, etc.)

By Missions (continues) -Non-military Purpose: b. Work Platform: Offshore drilling; Oil and gas production; Oceanography research; Electronic tracking and surveillance – satellite, communication, weather monitoring and navigation assistance; Ocean mining and dredging; Fishing, fish-processing; Offshore processing – sea water, minerals; Offshore power generation; Offshore service – construction, pipe laying, salvage and retrieval, Ice-breaker; Offshore support for personnel;

By Missions (continues) -Non-military Purpose: c. Offshore commerce: Breakwaters, artificial harbors (marinas); Deepwater mooring (buoys); At sea storage (gas and LNG terminal); Recreation (artificial reef); Sea fish farms; Wind Mills ; Renewable Energy;

By Configurations Surface displacement: Conventional ships (single hull); Catamaran (double hull, large deck area, small displacement, excellent stability). Near Surface: Air cushion vehicles; Hydrofoils and planning hull craft (small displacement, high speed) Submerged: Submersibles; submarines; Underwater habitats; Submerged buoys. Semi submersibles: Very deep, small water plane Bottom supported: Temporary & Permanent jack-up;

Tanker

Small Water-plane Area Twin-Hull (SWATH)

Ferry (Catamaran, or SWATH)

Container Ship

Hydrofoil Craft

Ordinates Drawing of A Plane-Hull Craft

II. Sub Systems Hull: Hydrostatic, hydrodynamic performance (Resistance)* Structure: Strength of hull** Machinery and Propulsion: Main engine & propellers* Ship Control: (maneuvering)**

Sub systems (Continues) Weapons &Deck Machinery: Navigation: Sensors &radar. Central Computer: Communications: Damage Control:**

Sub systems (Continues) Hotel & Provision and Service: Rigging and Mooring:** (OCEN 201) Economic feasibility: General Design Preliminary Design: Ship Yard & Dry Dock:

III. General Requirements For ocean transportation vehicles –Mobility, speed –Ability to carry payload (wt/total displacement) –Cost (lift/drag or wt/drag ratio) –Performance (motion, maneuvering, safety) –See p3 of the textbook

General Requirements (Continue) For Work Platforms: - Performance: motion, station keeping, structure. - Logistics: mobility, delivery system, support systems. - Economics: initial, operating cost, maintenance.